Sediments on the Shelf off Southern New England (GARRISON66 shapefile)

Metadata also available as - [Outline] - [Parseable text] - [XML]

Frequently anticipated questions:


What does this data set describe?

Title:
Sediments on the Shelf off Southern New England (GARRISON66 shapefile)
Abstract:
The sediments and geomorphology of a portion of the northeastern continental shelf between Hudson Canyon and Georges Bank have been investigated. Wave-cut terraces at 13, 45, 65, and 80 fathoms indicate four former low sea levels, while concentrations of beach ridges around 35 fathoms reveal a fifth. The pre-Holocene drainage pattern, still exposed over part of the area, shows that Block Channel was the main stream system which drained most of southern New England. The surface sediments on the western part of the study area are Late Pleistocene fluvial deposits. Overlying these coarse deposits in the central part of the outer shelf is a sandy silt facies that is also relict. The youngest facies and the only area of present deposition, is in the northeastern part where sand eroded from Nantucket Shoals is being deposited on the shelf.
  1. How might this data set be cited?
    Poppe, Lawrence J., 2003, Sediments on the Shelf off Southern New England (GARRISON66 shapefile): Open-File Report 03-001, U. S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Poppe, L.J., Paskevich, V.F., Williams, S.J., Hastings, M.E., Kelley, J.T., Belknap, D.F., Ward, L.G., Fitzgerald, D.M., and Larsen, P.F., 2003, Surficial Sediment Data from the Gulf of Maine, Georges Bank, and vicinity: a GIS Compilation: Open-File Report 03-001, U. S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: 1 CD-ROM
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -72.447000
    East_Bounding_Coordinate: -69.467000
    North_Bounding_Coordinate: 40.970000
    South_Bounding_Coordinate: 39.533000
  3. What does it look like?
    http://pubs.usgs.gov/of/2003/of03-001/data/seddata/garrison66/garrison66-thumb.gif (GIF)
    ImThumbnail image map showing extent and distribution of data layer coverage.
    http://pubs.usgs.gov/of/2003/of03-001/data/seddata/garrison66/garrison66.gif (GIF)
    Image map showing extent and distribution of data layer coverage.
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 1966
    Currentness_Reference:
    publication date
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: vector digital data
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • Entity point (145)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.
  7. How does the data set describe geographic features?
    garrison66.dbf
    Shapefile Attribute Table (Source: ESRI)
    FID
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    Shape
    Feature geometry. (Source: ESRI) Coordinates defining the features.
    CONSECNO
    Sample id assigned to distinguish between stations. (Source: Complier)
    Range of values
    Minimum:1
    Maximum:145
    Units:integer count
    Resolution:1
    PROJECTID
    Project id assigned to the data set for future identification. (Source: Compiler)
    ValueDefinition
    GARRISON66Scientist and year of publication
    CRUISEID
    Abbreviation of ship name and cruise number. (Source: Scientist)
    ValueDefinition
    TR-009Ship and cruise
    STATION
    Site at which a sample was taken (Source: Scientist) Assigned characters and numerics
    DEVICE
    Specific grab or core used to collect a sample (Source: Scientist)
    ValueDefinition
    SMITH-MACINTYRE GRABSmith-MacIntyre Grab Sampler
    VANVEEN GRABVanVeen Grab Sampler
    PISTON COREPiston Core sampling device
    GRAVITY COREGravity Core sampling device
    DATE
    Year, month and day when sample was collected (Source: Scientist) Character String; YYYMMDD
    LATITUDE
    Latitude coordinates of sample location. (Source: Scientist)
    Range of values
    Minimum:39.5300
    Maximum:40.9700
    Units:decimal degrees
    Resolution:.0001
    LONGITUDE
    Longitude of sample station. (Source: Scientist)
    Range of values
    Minimum:-72.447
    Maximum:-69.467
    Units:decimal degrees
    Resolution:.001
    DEPTH
    Water depth in meters at the corresponding station. (Source: Scientist)
    Range of values
    Minimum:40
    Maximum:355
    Units:meters
    Resolution:1
    DOMINANT_L
    Primarly lithology (Source: Scientist)
    ValueDefinition
    SANDSand content
    MUDMud content
    CLAYClay content
    SILTSilt content
    SECOND_LIT
    Secondary lithology (Source: Scientist)
    ValueDefinition
    CLAYClay content
    COARSER THAN SANDcoarser than sand
    SANDSand content
    SILTSilt content
    Field is blank; no secondary lithology assigned
    GRAVEL
    Percentage of gravel in a sample (Source: Scientist)
    Range of values
    Minimum:0
    Maximum:39
    Units:percent
    Resolution:0.01
    SAND
    Percentage of sand in a sample. (Source: Scientist)
    Range of values
    Minimum:0
    Maximum:99.8
    Units:percent
    Resolution:0.01
    SILT
    Percentage of silt in a sample (Source: Scientist)
    Range of values
    Minimum:0
    Maximum:83.59
    Units:percent
    Resolution:0.01
    CLAY
    Percentage of clay in a sample (Source: Scientist)
    Range of values
    Minimum:0
    Maximum:40.52
    Units:percent
    Resolution:0.01
    SHEPARD_CL
    Classification of the sediment size distribution based on a scheme devied by Shepard (1954) (Source: Compiler)
    ValueDefinition
    SANDSand content
    SAND SILT CLAYsand, silt and clay content
    SANDY SILTsandy silt content
    SILTsilt content
    SILTY SANDsilty sand content
    Character string; Verbal equivalents of the Shephard classification scheme Field is blank; no classification is assigned
    Entity_and_Attribute_Overview:
    Sediment grain-size data, textural classifications, lithologic descriptions, navigation, and identifiers for the samples collected aboard the Trident by Garrison and McMaster (1966)
    Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Lawrence J. Poppe
  2. Who also contributed to the data set?
    Please review the cross section information for the original data set credit to L.E. Garrison and R.L. McMaster (1966). Larry Poppe for entering the data from the source report and creating the ArcView shapefile.
  3. To whom should users address questions about the data?
    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2314 (voice)
    (508) 457-2310 (FAX)
    lpoppe@usgs.gov

Why was the data set created?

The purpose of this data layer is to release a digital version of the sediment data published in Garrison and McMaster (1966).

How was the data set created?

  1. From what previous works were the data drawn?
    Information unavailable from original metadata. (source 1 of 1)
    Garrison, L.E., and McMaster, R.L., 1966, Sediments and Geomorphology of the Continental Shelf off Southern New England: Marine Geology v. 4, p. 273-289., Elsevier, Amsterdam.

    Type_of_Source_Media: paper
    Source_Contribution: Information unavailable from original metadata.
  2. How were the data generated, processed, and modified?
    Date: 10-Sep-2002 (process 1 of 3)
    The navigation was digitized from maps in the original paper. The remaining source information was manually entered into digital form and together were imported from an ASCII text file into an ArcView table. The table was later converted to an event theme in ArcView and saved as the final shapefile. Person who carried out this activity:
    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2314 (voice)
    (508) 457-2310 (FAX)
    lpoppe@usgs.gov
    Data sources used in this process:
    • garrison66.txt
    Data sources produced in this process:
    • garrison66.shp
    • garrison66.dbf
    • garrison66.shx
    Date: 01-Dec-2015 (process 2 of 3)
    Edits to the metadata were made to fix any errors that MP v 2.9.32 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). The source information was incomplete and had to be modified to meet the standard. Minor fixes to the attribute format for some attributes was needed. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Rd.
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 20-Jul-2018 (process 3 of 3)
    USGS Thesaurus keywords added to the keyword section. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
  3. What similar or related data should the user be aware of?
    Garrison, L.E., and McMaster, R.L., 1966, Sediments and Geomorphology of the Continental Shelf off Southern New England: Marine Geology v. 4, p. 273-289., Elsevier, Amsterdam.


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
    Navagational methods are not discussed in the original report. Horizontal accuracy is unknown.
  3. How accurate are the heights or depths?
    Tides are less han 2 m
  4. Where are the gaps in the data? What is missing?
    Sample locations and textural classifications are provided for 145 grab and coring stations.
  5. How consistent are the relationships among the observations, including topology?
    No additional checks for topological consistency were performed on this data.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: None
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
  1. Who distributes the data set? (Distributor 1 of 1)
    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2314 (voice)
    (508) 457-2310 (FAX)
    lpoppe@usgs.gov
  2. What's the catalog number I need to order this data set? Downloadable Data
  3. What legal disclaimers am I supposed to read?
    Although these data have been used by the U.S. Geological Survey (USGS), U.S. Department of the Interior (DOI), no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  4. How can I download or order the data?
    • Availability in digital form:
      Data format: Five files (garrison66.shp, garrison66.dbf, garrison66.shx, garrison66.sbx, garrison66.sbn) comprising the ArcView point shapefile components, 'prj' and 'avl' files, metadata text file and browse graphic. in format SHP (version 3.2) ESRI point shapefile Size: 0.004
      Network links: http://pubs.usgs.gov/of/2003/of03-001/data/seddata/garrison66/garrison66.zip
      Media you can order: CD-ROM (Density 650 Mbytes) (format ISO 9600)
      Note: The user must have a computer system with a CD-ROM available. To browse the information contained on this CD-ROM, the user must have a current WWW browser available. The user must also have software installed on their computer to unzip the archived file.
    • Cost to order the data: None

  5. What hardware or software do I need in order to use the data set?
    These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.

Who wrote the metadata?

Dates:
Last modified: 20-Jul-2018
Metadata author:
Lawrence J. Poppe
U.S. Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA
USA

(508) 548-8700 x2314 (voice)
(508) 457-2310 (FAX)
lpoppe@usgs.gov
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/eastcoast/gome/samples/garrison66.shp.faq.html>
Generated by mp version 2.9.49 on Mon Sep 10 17:45:08 2018